Improvement in perforated tiles for draining paper-stock and for other purposes



i S. SNELL. Perforated Tile for Drainng Paper Steek, and for Other Purposes.

No. 206,632. Patented July 30,1878.

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UNITED STATES PATENT FFICE.

SAMUEL SNELL, OF SPRINGFIELD, MASSACHUSETTS.

IMPROVEMENT IN PERFORATED TILES FOR DRAINING PAPER-STOCK AND FOR OTHER PURPOSES.

Specification forming part of Letters Patent N0. 206,632, dated July 30, 1878; application filed June 12, 1877.

To all 107mm it may concern:

Be it knoivn that I, SAMVEL SNELL, of Springfield, Hampden county, State of Massachusetts, have invented certain Improvements in Straincrs for use in the bottom of Drainers in Paper-Mills, ot' which the following is a specification:

The object of my invention is to provide a strainer which will be cheap and durable, which will not discolor the paper-stock, and which will bc'frce from liability to become choked by the material; and to this end the invention consists of a ilat tile provided with conical or flaring holes, and combining a series of such tile with tile or concrete supports, as hereinafter described.

In the manufacture of paper thc stock, consisting of ivet ground rags or similar material, is dumped from the engine into what are known as drainers, the bottoms of which are perforated to permit the escape of the Water. The perforated bottoms of these screens or drainers have hitherto been made in many dii-ferent Ways, all ot' which have been found subject to serious object-ion in practical use. In some instances diiculty was experienced from the liability' of the holes or perforations to become clogged or closed by the wet material. In other cases difliculty arose from the fact that the strainers were made of meta-l, the oxidation of which caused a discoloration of the stock. These difficulties I overcome by making my strainer of tile and providing1 it With perforations of a aring or conical form larger at the bottom than at the top, and in supporting the tile thus made by beams or bars, of tile or concrete, which, like the tile, are free from liability of oxidation.

Figure 1 represents a plan View of my improved strainer; Fig. 2, a cross-section of the same; Fig. 3, a top-plan vie\v illustrating the manner ot' constructing the tloor or bottom otl the machine.

The tiles A arc made of any suitable clay or composition, of a flat and regular form, and provided with numerous vertical openings or perforations c, the lower ends of which are larger than the upper.

In constructing the drainer it is provided at the bottom with a series ot' longitudinal bars or supports, B, made of tile or coucrete, and arranged parallel with each other at suitable distances apart. Upon these beams I arrange the tiles A in such manner as to form a continuous unbroken floor to support the paper-stock. The perforations c permit the Water to flow from the stock, and, owingto their conical form, avoid the danger of the material which may enter their upper ends lodging within them.

I am aware that a drain-pipe for agricul tural purposes has been made of tile and provided With pertbrations, and this I do not claim but,

Having described my invention, what I do claim is- 1. A strainer for use in machines for draining paper-stock, consisting of a iiat tile, A, provided with a series of vertical conical openings, c, as shown and described.

2. As au improvement for draining paperstock, a bottom composed of a series of concrete or tile supports, B, and a series of tileslabs, A, arranged thereon and provided with tapering perforatious c, as and for the purpose shown and described.

\ SAMUEL SNELL.

Vitnesses:

T. A. CURTIS, E. H. THAYER. 

